5111DIGITAL MODE OPERATION11■ About D-STAR systemIn the D-STAR system, repeater linking via a 10 GHz bandbackbone and internet network (gateway connection) capa-bilities are available. This system provides you with muchwider coverage range during digital voice mode operation.• D-STAR system outline (440 MHz band)For current existing repeater operation, stations that are com-municating must be in the same repeater’s operating area.However, in the D-STAR system as in the illustration at left,the repeaters can be linked via the system repeaters (with a10 GHz signal). Thus stations A and B can communicate eventhough they are in different repeater operating areas.Also, the D-STAR system repeaters are connectable throughthe internet network— gateway connection capability.For example, when station B uses the gateway connectionstation B can communicate with the station C!By using the gateway connection, long distance communica-tions like DX operation may be possible with 144 MHz (for IC-V82)/ 440MHz (for IC-U82) digital voice!In the D-STAR system, an independent repeater’s operatingarea is called an Area and a group that links repeaters via a10 GHz backbone is called a Zone.NOTE: The digital repeater for either 144 MHz or 440 MHzof amateur radio bands operation is not available at pre-sent of November 2004. It will be designed in the future.Station ARepeater ARepeater D440 MHz signalStation CRepeater C440 MHz signal10 GHz signal440 MHzsignalStation DStation BRepeater B10 GHz signal440 MHz signalInternetnetworkInternetnetwork